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TeV gamma-ray observations of the binary neutron star merger GW170817 with H.E.S.S
Langue
en
Article de revue
Ce document a été publié dans
Astrophys.J.Lett.. 2017, vol. 850, n° 2, p. L22
Résumé en anglais
We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have been obtained starting only 5.3 hr after ...Lire la suite >
We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have been obtained starting only 5.3 hr after GW170817. The H.E.S.S. target selection identified regions of high probability to find a counterpart of the gravitational-wave event. The first of these regions contained the counterpart SSS17a that has been identified in the optical range several hours after our observations. We can therefore present the first data obtained by a ground-based pointing instrument on this object. A subsequent monitoring campaign with the H.E.S.S. telescopes extended over several days, covering timescales from 0.22 to 5.2 days and energy ranges between to . No significant gamma-ray emission has been found. The derived upper limits on the very-high-energy gamma-ray flux for the first time constrain non-thermal, high-energy emission following the merger of a confirmed binary neutron star system.< Réduire
Mots clés en anglais
Gamma rays: general
Gravitational waves
Gamma-ray burst: general
gamma-ray burst: individual
gamma rays: general
gravitational waves
neutron star: binary
gamma ray: emission
gamma ray: flux
gamma ray: VHE
HESS
gravitational radiation
Cherenkov counter
monitoring
optical
imaging
air
Origine
Importé de halUnités de recherche